As someone who has tried studying all three languages, Korean and Japanese are actually quite similar. Many grammar patterns like particles and conjugations can be directly translated and many loanwords from Chinese sound very similar in both languages. So knowing either one certainly does make learning the other one easier.
Adolescents attending schools with restrictive, compared to permissive policies had lower phone (adjusted mean difference −0.67 h, 95% CI −0.92 to −0.43, p = 0.00024) and social media time (adjusted mean difference −0.54 h, 95% CI −0.74 to −0.36, p = 0.00018) during school time, but there was no evidence for differences when comparing usage time on weekdays or weekends.
I don’t think this image is AI because of the background composition. While I agree the pattern on the right arm looks a little weird, that alone doesn’t proof it’s AI. It could be edited using AI but might just be photoshopped. Also you shouldn’t trust AI detection software, it doesn’t work.